On 10 Jan, John Conover wrote:
[ top posting fixed ]
| Professional Software Engineering writes:
| > At 08:45 2002-01-10 +0000, John Conover wrote:
| >
| > >How do you do a strict boolean condition? Something like
| >
| > [...]
| > # enable/disable the filters
| > SOMEFLAG=on
| >
| > :0
| > * SOMEFLAG ?? on
| > * someother condition, etc
| >
| > or, if you want to check for it being set AT ALL:
| >
| > :0
| > * ! SOMEFLAG ?? ^^^^
| >
|
| Thanks. After some diligence:
|
| SOMEFLAG="on"
|
| is not the same as:
|
| SOMEFLAG=on
|
| John
|
PMFJI, but Huh? Unless I completely misunderstand this assertion, or
this behavior is procmail version dependent with some versions doing
something completely unintuitive with quoting (which I seriously doubt),
it isn't correct.
$ cat ./.this
DEFAULT=/dev/null
NL="
"
SOMEFLAG = on
:0
* ! SOMEFLAG ?? ^^^^
* SOMEFLAG ?? ^^on^^
{ LOG = "Recipe 1 (sans quotes): SOMEFLAG=$SOMEFLAG;$NL" }
SOMEFLAG = "on"
:0
* ! SOMEFLAG ?? ^^^^
* SOMEFLAG ?? ^^on^^
{ LOG = "Recipe 2 (w/ quotes): SOMEFLAG=$SOMEFLAG;$NL" }
$ procmail ./.this </dev/null
Recipe 1 (sans quotes): SOMEFLAG=on;
Recipe 2 (w/ quotes): SOMEFLAG=on;
You can see the quotes make no difference (illustrated both by the
anchoring of the expressions in the conditons and the LOG= output).
Of course, if you meant
* SOMEFLAG ?? on
is not the same as:
* SOMEFLAG ?? "on"
then that would be correct.
Don Hammond
--
Reply to list please, or append "6" to "procmail" in address if you must.
Spammers' unrelenting address harvesting forces me to this...reluctantly.
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